Process for the preparation of trifluoromethylated aromatic comp

Details Process for the preparation of trifluoromethylated aromatic comp Process for the preparation of trifluoromethylated aromatic comp

1979-03-09

1980-06-10

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260651HA, 260192, 568 16, 568 35, 568 34, 568 56, 568 65, 568316, 568929, 568937, 568936, 568655, 568656, 562495, 562493, 562496, 556476, C07C 8514

Patent

active

042072662

ABSTRACT:
This invention relates to a novel process for the direct trifluoromethylation of aromatic compounds via carbon tetrachloride and hydrogen fluoride in the presence of strong Bronsted or Lewis acids which give an acidic reaction (increase in concentration of H.sub.2 F.sup.+ ions) in anhydrous hydrogen fluoride.

REFERENCES:
patent: 2273922 (1940-07-01), Benning et al.
patent: 3950445 (1976-04-01), Ryf
patent: 4157344 (1979-06-01), Feiring
Giles et al., Trans. Far. Soc. 62, 128, (1966).
Tiers, JACS, 82, 5513 (1960).
Kobayaski et al., Tetrahedron Let., 4095 (1969).
Hasek et al., JACS, 82, 543 (1960).

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